What is Kubeseal (Sealed Secrets)?

Kubeseal is a CLI utility that uses asymmetric cryptography to encrypt secrets that only the Sealed Secrets controller can decrypt.

Overview of Kubeseal (Sealed Secrets)

TL;DR

docker run --name sealed-secrets-kubeseal REGISTRY_NAME/bitnami/sealed-secrets-kubeseal:latest

Why use Bitnami Images?

• Bitnami closely tracks upstream source changes and promptly publishes new versions of this image using our automated systems.
• With Bitnami images the latest bug fixes and features are available as soon as possible.
• Bitnami containers, virtual machines and cloud images use the same components and configuration approach - making it easy to switch between formats based on your project needs.
• All our images are based on minideb -a minimalist Debian based container image that gives you a small base container image and the familiarity of a leading Linux distribution- or scratch -an explicitly empty image-.
• All Bitnami images available in Docker Hub are signed with Notation. Check this post to know how to verify the integrity of the images.
• Bitnami container images are released on a regular basis with the latest distribution packages available.

Looking to use Kubeseal (Sealed Secrets) in production? Try VMware Tanzu Application Catalog, the commercial edition of the Bitnami catalog.

Supported tags and respective Dockerfile links

Learn more about the Bitnami tagging policy and the difference between rolling tags and immutable tags in our documentation page.

You can see the equivalence between the different tags by taking a look at the tags-info.yaml file present in the branch folder, i.e bitnami/ASSET/BRANCH/DISTRO/tags-info.yaml.

Subscribe to project updates by watching the bitnami/containers GitHub repo.

Get this image

The recommended way to get the Bitnami Kubeseal (Sealed Secrets) Docker Image is to pull the prebuilt image from the Docker Hub Registry.

docker pull REGISTRY_NAME/bitnami/sealed-secrets-kubeseal:latest

To use a specific version, you can pull a versioned tag. You can view the list of available versions in the Docker Hub Registry.

docker pull REGISTRY_NAME/bitnami/sealed-secrets-kubeseal:[TAG]

If you wish, you can also build the image yourself by cloning the repository, changing to the directory containing the Dockerfile and executing the docker build command. Remember to replace the APP, VERSION and OPERATING-SYSTEM path placeholders in the example command below with the correct values.

git clone https://github.com/bitnami/containers.git
cd bitnami/APP/VERSION/OPERATING-SYSTEM
docker build -t REGISTRY_NAME/bitnami/APP:latest .

Configuration

Running commands

To run commands inside this container you can use docker run, for example to execute kubeseal --version you can follow the example below:

docker run --rm --name sealed-secrets-kubeseal REGISTRY_NAME/bitnami/sealed-secrets-kubeseal:latest -- kubeseal --version

Notable Changes

Starting January 16, 2024

• The docker-compose.yaml file has been removed, as it was solely intended for internal testing purposes.

Contributing

We’d love for you to contribute to this container. You can request new features by creating an issue or submitting a pull request with your contribution.

Issues

If you encountered a problem running this container, you can file an issue. For us to provide better support, be sure to fill the issue template.

License

Copyright © 2025 Broadcom. The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.